10 questions · Four answers, and only one is true. Can you spot it?
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Question 1 of 10
Why do onions make us cry?
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It is the eyes that sting, not the nose.
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It drifts up to your eyes, and the tears are your eyes washing the sting away.
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You cry from across the chopping board, untouched.
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Your eyes water even while you are laughing about it.
Show the answer
- A It is the eyes that sting, not the nose.
- B It drifts up to your eyes, and the tears are your eyes washing the sting away.
- C You cry from across the chopping board, untouched.
- D Your eyes water even while you are laughing about it.
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Question 2 of 10
What are thunder and lightning?
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Lightning flashes at midnight too, when the Sun is nowhere near.
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Clouds are soft mist; they cannot bang.
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You always see the flash first, because light travels much faster than sound.
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Charge builds up in the cloud until it jumps — and the air bangs as it goes.
Show the answer
- A Lightning flashes at midnight too, when the Sun is nowhere near.
- B Clouds are soft mist; they cannot bang.
- C You always see the flash first, because light travels much faster than sound.
- D Charge builds up in the cloud until it jumps — and the air bangs as it goes.
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Question 3 of 10
What are continents?
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A continent holds many countries, and one holds none at all.
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Those are the oceans between them.
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Long ago they were squashed together into one, and they are still drifting apart.
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Land does not float — it goes all the way down.
Show the answer
- A A continent holds many countries, and one holds none at all.
- B Those are the oceans between them.
- C Long ago they were squashed together into one, and they are still drifting apart.
- D Land does not float — it goes all the way down.
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Question 4 of 10
How does a fridge keep food cold?
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A fridge stays cold in the middle of a heatwave.
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The air in a fridge is chilly, not frozen — the milk would be a block of ice.
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Cold is simply what is left when heat has gone.
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And lets it go into the room — there is no such thing as making cold.
Show the answer
- A A fridge stays cold in the middle of a heatwave.
- B The air in a fridge is chilly, not frozen — the milk would be a block of ice.
- C Cold is simply what is left when heat has gone.
- D And lets it go into the room — there is no such thing as making cold.
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Question 5 of 10
Why do we get goosebumps?
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The bumps are hairs standing up, nothing being pushed.
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A leftover trick from furry ancestors: on a furry animal it traps warm air and makes them look bigger.
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Goosebumps come up on warm skin too, at a beautiful piece of music.
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They arrive all over at once, which no bite does.
Show the answer
- A The bumps are hairs standing up, nothing being pushed.
- B A leftover trick from furry ancestors: on a furry animal it traps warm air and makes them look bigger.
- C Goosebumps come up on warm skin too, at a beautiful piece of music.
- D They arrive all over at once, which no bite does.
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Question 6 of 10
What are mushrooms?
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The part that pops up is only the tip; most of a fungus spreads through the soil, tidying away what has rotted.
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A mushroom has no wood, no roots and no leaves.
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They never move or eat the way animals do.
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Plants make their own food from sunlight; mushrooms cannot.
Show the answer
- A The part that pops up is only the tip; most of a fungus spreads through the soil, tidying away what has rotted.
- B A mushroom has no wood, no roots and no leaves.
- C They never move or eat the way animals do.
- D Plants make their own food from sunlight; mushrooms cannot.
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Question 7 of 10
Why do we have friends?
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Friendships stretch far beyond one place.
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Playing is one part; helping and sharing are just as much of it.
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Friends play, help, share and listen — and laughing together sets off tiny happy helpers in the brain.
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Nobody has to be told to enjoy company.
Show the answer
- A Friendships stretch far beyond one place.
- B Playing is one part; helping and sharing are just as much of it.
- C Friends play, help, share and listen — and laughing together sets off tiny happy helpers in the brain.
- D Nobody has to be told to enjoy company.
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Question 8 of 10
How does a zip work?
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Going down, the same clever shape prises them apart again.
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Nothing sticks — the teeth hold each other.
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Plenty of zips are plastic, with no metal in them at all.
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They would only work once if they did.
Show the answer
- A Going down, the same clever shape prises them apart again.
- B Nothing sticks — the teeth hold each other.
- C Plenty of zips are plastic, with no metal in them at all.
- D They would only work once if they did.
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Question 9 of 10
How is bread made?
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Bread flour comes from grain such as wheat.
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It rises because something inside it is making gas.
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Flour and water make the dough, the bubbles make it soft, and the oven sets them and browns the crust.
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The bubbles are made by the yeast, long before the oven.
Show the answer
- A Bread flour comes from grain such as wheat.
- B It rises because something inside it is making gas.
- C Flour and water make the dough, the bubbles make it soft, and the oven sets them and browns the crust.
- D The bubbles are made by the yeast, long before the oven.
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Question 10 of 10
How does popcorn pop?
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The push comes from inside the kernel.
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It pushes harder and harder until the kernel bursts inside-out — which is why only corn with a tough skin will pop.
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Popcorn pops in a hot-air popper with no oil at all.
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Nothing grows — it turns itself inside out.
Show the answer
- A The push comes from inside the kernel.
- B It pushes harder and harder until the kernel bursts inside-out — which is why only corn with a tough skin will pop.
- C Popcorn pops in a hot-air popper with no oil at all.
- D Nothing grows — it turns itself inside out.
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